Reinforcing device for concrete structures.



J. T. SIMPSON.

REINFORGING DEVICE FOR CONCRETE STRUCTURES.

APPLICATION FILED DEO.17.1907.

Patentd N0v.17, 1908.

:P l/VVE/VTOR.

JIM/0A0 7T 5120,0500.

WITNESSES 7/M2fi A d L ATTORNEYS.

UNITED srnirnsr a rnnr onricn.

JOHN T. SIMPSQN, OF NEWARli, NEW JERSEY. i

REIN'FORCING nnv on Fen CONCRETE s'rnUc'r IiEsl I No. oo4,2s3.

Specification 01' L etters Patent.- PatentedNov'ylfi, loos.-

ApplicationfiledDeeeinloer1'7,1907. senamamem. I j

To all whom it may concern." I

Be it known that 1, JOHN T. SI PSON, a citizen of the United States, and residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and usefullmprovements in Reinforcing Devices for Concrete Structures, of whiclijthe followmg is a specification, such as will'enable those skilled in the art to which it appertains to .make and use the same.-

My invention consists of an improved reinforcing metal barv or'frame for use in slabs, beams, girders, columns,- partitions, arches,

walls and the like, of concrete and where the same. can be strengthened and cheapened by the introductions of a reinforcing element to provide for tension and shearing stresses.

Theessential; features of this invention are I to provide a metal reinforcing bar, frame or device formed from, a rolled shape, and consisting of 'a' unit in which-the total area of the'bitrorframe is used'to'provide for the tension stresses at the center near the bottom l of-the reinforced member where .the tension stresses are generally maximum, and at the same time to form a trussed' frame or dev ce in WhlCll a 'partof the area 15 used to provide for the horizontal and vertical shearing stresses near the ends of the reinforced member where the shearing stresses are generally maximum; and all parts-of which are firmly attached-to each other without resorting to mechanical, electrical, chemical or other means of attachment, thus providing areinforcing bar, frame or device in which there are no loose bars, rods or other parts which through carelessness or ignorance ,of the work'rnen maybe omitted during the instal- 1ation,thus weakening the structure; a further object of my invention is to provide a reinforcing bar, frame or device formed from rolleid shapes that can be kept in stock at convenient -pointsl for distribution, and from n -sa e t which reinforcing frames or devices to. suit any given requirements of reiiiforcii'ig can be 1 quickly made and delivered, thus' el'un l t atrn long and costly delays, and which device .3 Hi. frames can be made singly or in multiples and which when made in single units can be readilyinade into multiple units by the use of clam s": or other similar attachments when the stresses in the member being reinforced equiresmoirearea of metalthain is provided The invention is fully disclosedin the following specification, of which thenaoconr panying drawing forms a part, in which a multiple and'singleIunitbar or frame and the manner of formingmultiples, from single un ts 111 the. preferredfo'rin are shown and in which the separate parts are designated by suitable reference characters in each of the views, and in which Figure 1 is a side View of a, multiple'franie after being expanded and formed ready for use, Flg. 2 a top view ofa multiple,frame afterbemg expanded and before being bent into shape for use as shown in Figs. 8 and 9,

Fig; 3 a top View of the rolled metal shape for multiple frames S lt COlllOS'flOlll the rolls and before any work has been'done on same, Fig. 4 an end view of the shape shown assembling the same before placing in the forms; it also shows theniethod of keeping the frame at the proper dislauceffrom the sofiit board forming thebottoui of the inemher that is reinforced, and .;,-Fig. 1]. .a cross section of FiglO, taken on.-line .1l'.11 and showing further the method of assembl ng the single units into multiples and: the supports for the frame.

- Referring to the drawing A. represents a multiple unit frame, B a-single unit frame, (fl a-n'iultiple frame made, of two or-ni'ore single units, D a rolled shape from which-the multiple units are formed, and E a rolled shape from which the single units are formed. and the shape D consists, in the neotedby intermediate web members. F; while the shape. E consists of two parallel rod, flange or thickened incinbers'G connected by an intervening longitudinal web u'ieinber F.

The multiple unit fra nesA ,are formed from rolled metal shapes D by severing the webs F longitudinally and diagonally at inform of construction shown, of four parallel 21-00 1 rod, flange or thickened members G con ter vals shown at F in 3, the length --ofthe cut depending on the width and depth lofthe frame desired, and forcin'g'the rods,

"point,

towards the rods, flanges or bars G, or range diagonally thereto, in" the preferred form,

- ters Patent, is

bars or thickened members G' apart and into the form-shown-in Fig. 2, which'expanded Y shape is then bent --longitudinally into the,

form shown in' Fig. 8 which is U- shaped a rolled shape E shown in Fig. 6, by severing the webs .F. longitudinally and diagonally at intervals, the length of the cut de-'.

pending on the depth of the frame required and forcing the rods, bars or thickened members G- apart and into the 'form shown in Fig. 5.

In'forming both the multiple units A and the single units Bthe Webs F. are so severed as to form the web members K'near the bend concrete constructions consisting, of four par allel bars connected throughout their lengths L of the top flange, rod or bar G of the frame thus strengthening the frame at this The-web members J and-K incline but they may be formed at rightangles thereto if desired; and in severing the webs F to form the web members J and K no metal is wa's'ted but the whole area of the shapes are retained as is also the original attachment of 'the ,web members J and K to the:

flanges, rods or bars G. v I

The multiple 'framesO formed of single units Bare assembled,-in t he preferred form,- atthe building site by means of, improved clamps M and N, the clamps :M formm'g a P which when attached to bent p ates Q sup- ;port the frames at-the proper distance, from the bottom of forms It to permit" the con 'crete to pass under the frames. The bolts 0 can afterwards beremovedand the nuts fused for attaching hanger bolts etc. o

It iwll be understood, that in practice, my. improved reinforcing devices arfi between the parts of a steel or sim' and the'concrete cast in position around the same in the usual manner, and the said :reinforcing devices mayalsobe used'i'n the her all mannerin forming concrete beams, girde s,'

columns, arches, walls and the likeand for various otherpurposes.

Having fully described my invention, what secure by Let- I claim as new and-desire to 1. A metal reinforcing device for concrete constructions, consisting of one or more pairs of bars, one bar of a pair being substantially straightifrmn end to end, the other bar havits middle portion in close relation to the straight bar, but having its end portions bentaway fromth'e straight bar but parallel therewith, the two bars being connected together at theirv middle and ends by thinner metallic portionsintegral with said bars, the V v stantially as described.

oblique ribs formedby expanding or sepa bars being continuous "throughout their ipe sleeves "and the expanded outer barsand outer web placed in. lar frame,

'7 allel bars connected throughout their lengths distance between the o-uter'aiidr' inner bars come-e bars" of a pair being in a common-planass 2. A metal-reinforcing device for concrete, constructions, consisting of one or more 9 1 of bars, one bar of a pair being substantiall straight from end to end, the other bar ha iih its middle portion in close relation to] straight bar, but having its end portions sea away from the straight bar but parallel therewith, the two bars being connected gether at their middle and ends by thinner" metallic portions integral with 'saidbars,- the bars of a pair being in a'common planegthe straight bars of two ormore pairs being also connected by thinner metallic portions 1 integral with said bars and extending in a straight line from one "to the other, substantially as described: v

3. A metal reinforcingdevice for use in" by web members of less thickness than said bars, the end portions of the outer parallel bars beingcurved outwardly and expanded orseparated from the iimer 'arallelbar's except at the middle portion 0 the device, butand end portions and the, end portions there-v of being connected therewith-at intervals by rating the slitted outer web members, said lengths andlthe distance between the outer and inner-bars at the middle portion of the device. being the same as the width ofthe originahw'ebs, the inner. web Lmember being slitte'd longitudinally and diagonally throughout its length, and the inner parallel bars-being expanded or separated but remaining parallel throughout their lengths,

portions being bent at right angles .to the innerweb-portion. 1'

i. A metal reinforcing device for use in concrete constructions consisting of four par byiveb ifielnbers of less thickness than said bars, the endportionsof the outer web members being provided at intervals with parallel connected therewith at intervals by oblique ribs formed by expanding or separating. the

slitted outer web'melnbers, said bars being;

continuous throughout thoir lengths and the inner web member being slitted longitudi;

90 remaining parallel therewith at the middle I curved outwardly and expandedor separated nally and diagbliaily throiighbut its lelngth, my inir'e'ntioii I have signed my name in and "the inner parallel bars being expan or separated but remaining parallel throughout their lengths, and the expanded outer I bars 'and outer web pqrtionsbeing bentat 'Witnesses'i right a-nglz to the inner Webportwn. C. E'. 'MUL'REANY, In testimony that I claim the foregoingas MAI E. Doom.

presence pf. the subscribing Witnesses this 16th day-10f- December 1907.

JOHN T. SIMPSON. 

